Compare Levaquin vs. Penicillin

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Levaquin
(Levofloxacin)

Penicillin Vk
(Penicillin)

Kills bacteria. Levaquin (Levofloxacin) is good for treating many bacterial infections and is available as generic. However, it can cause damage to your tendons, and make your skin more sensitive to the sun.Kills bacteria. Penicillin Vk (Penicillin) is good for treating many bacterial infections and is available as a generic. You may need to use another form of birth control along with your birth control pills. It's also best taken on an empty stomach but it can cause an upset stomach.
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Reviews & ratings
Button Group. All currently active
Button Group. All currently active
4.364705882352941Levaquin
Reviews for Levaquin (Levofloxacin)
54%
of people say Levaquin (Levofloxacin) is worth it
39%
say it works well
29%
say it's a big hassle
Reviews for Penicillin Vk (Penicillin)
71%
+17% vs. Levaquin (Levofloxacin)
52%
+13% vs. Levaquin (Levofloxacin)
12%
+17% vs. Levaquin (Levofloxacin)
Side effects
LevaquinPenicillin

The Levaquin FDA package insert doesn’t have numbers about how common side effects are.

More about Levaquin side effects »

The Penicillin FDA package insert doesn’t have numbers about how common side effects are.

More about Penicillin side effects »
How it works
LevaquinPenicillin
Levaquin (Levofloxacin) is an antibiotic. It kills bacteria by preventing them from reproducing and repairing themselves.Penicillin Vk (Penicillin) is an antibiotic. It kills bacteria by preventing them from making their own protective covering.
Type of medication
LevaquinPenicillin
Antibiotic
Fluoroquinolone
Prescription only
Antibiotic
Penicillin
Prescription only
Available as
LevaquinPenicillin
  • Pill
  • Liquid
  • Pill
Used for (click to learn more)
LevaquinPenicillin
Risk factors for serious side effects
LevaquinPenicillin
  • Over 60 years of age
  • On long-term steroid use
  • Heart, kidney, or lung transplant
    • History of liver disease
    • Seizures
        • Diabetes
        • Taking medications for diabetes
            Detailed Levaquin (Levofloxacin) risks & warnings »
                • Prior severe allergic reaction to Penicillin Vk (Penicillin)
                Detailed Penicillin Vk (Penicillin) risks & warnings »
                Pregnancy category
                LevaquinPenicillin
                CFDA pregnancy category (Weigh risks vs. benefits)

                Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

                See the FDA package insert
                NFDA pregnancy category (Unknown)

                The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

                See the FDA package insert
                Alcohol
                No specific alcohol-related info.No specific alcohol-related info.
                Food
                No specific food-related info.
                • Try to take it on an empty stomach. If this gives you an upset stomach, take it with food.
                Kidneys and liver
                No specific kidneys and liver-related info.No specific kidneys and liver-related info.
                Sex
                No specific sex-related info.No specific sex-related info.
                Sleep
                No specific sleep-related info.No specific sleep-related info.
                Weight
                No specific weight-related info.No specific weight-related info.
                Upsides and benefits
                LevaquinPenicillin
                • Available in different forms: tablet, capsule, and suspension.
                • Less resistance seen in bacteria to this antibiotic. Your doctor may run tests to see which antibiotics will kill the bacteria causing your infection.
                • Available in generic.
                • Used to treat many types of bacterial infections.
                • Available in different forms: tablet, capsule and suspension.
                • Available in generic.
                • Used to treat many types of bacterial infections.
                Downsides and risks
                LevaquinPenicillin
                • Must be used with caution in people over 60 years of age, or who have had either an organ transplant or on long-term steroid use due to possible tendon rupture.
                • Levofloxacin can make your skin more sensitive to the sun.
                • Can't be used if you've ever had myasthenia gravis.
                • You have to space out any medications with aluminum, magnesium or zinc by at least 2 hours.
                • Can cause changes in taste, headaches, and insomnia.
                • Many bacteria have developed resistance. Your doctor may run tests to see if Penicillin will work on your infection.
                • Can make birth control pills less effective.
                • Best taken on an empty stomach, but can cause stomach upset and diarrhea.
                Tips from our pharmacists for people taking the medication
                LevaquinPenicillin
                • If you notice pain in your Achilles tendons, contact your doctor.
                • Wear sunscreen if you're going to be out in the sun.
                • Take the medication exactly how the doctor tells you to.
                • Take this medication with plenty of fluids.
                • Space out any medications containing aluminum, magnesium or zinc by at least 2 hours.
                • Can cause changes in taste, headaches and insomnia.
                • Can cause diarrhea, nausea or vomiting.
                • Take this medication exactly how your doctor tells you to.
                • If you're taking birth control pills, this medication can make them less effective.
                • Try to take it on an empty stomach. If this gives you an upset stomach, take it with food.
                • Can cause diarrhea, nausea or vomiting.
                Learn more
                More about LevaquinSide effectsReviews & ratingsAlternativesFDA package insert
                More about PenicillinSide effectsReviews & ratingsAlternativesFDA package insert